For many years now my muscles have been getting weaker. Did have two MRI but nothing showed. One neurologist told me to excercise more but that is crazy as I am active. Although not lately as I fall down without warning if I run,dance etc. There isn't any pain. I feel like I am going to go down so I walk very carefully. I did get a Vitamin D test done and it showed 19 as the result with the lab normal 30-100. I started taking 50000IU of D a few weeks back, so hopefully this will help, although I dont know if there is any muscle damage due to lack of D. Has anyone heard of VERY weak muscles...no pain thankfully!

Yep! I have this two. I have had low vitamin D for the past 2 years. My last test was a 26. I just finished a few weeks of the 50,000 iu of Vitamin D but I think I am still low. I have muscle twitching going on with mine. I don't know about you. I haven't noticed pain. Just muscle twitching. This is a very common problem being low on D. I am allerigic to diary and I live in a part of the country where there is 6 months of not much sun. Good luck!

I was tested for vitamin D and my number was 8, but I didn't have any muscle weakness. As a matter of fact, I didn't have any symptoms of deficiency at all. My immune system was functioning (never got any colds) and I felt well. When I started taking high-dose supplements of D3 I didn't feel any better (why would I if I was already feeling well) and sometimes I felt worse.

You may want to check your food consumption against the USDA nutrient database to find out how many calories and how much protein and other nutrients you are actually consuming in order to check to see whether the weakness could be due to calorie, protein, or other nutrient deficiency.

Get your ferritin (iron stores) checked out too. A lot of people have low iron stores which doesn't leave much to go around. I never knew that our muscles and bone marrow depended on our iron stores. I thought ferritin only related to energy, but in fact adequate iron stores are required for things like liver detox, to transport oxygen to various areas of the body via your blood stream, correct growth/resting/shedding cycle of our hair, health of our skin etc etc.

Most people who are low in Vit D are often low in ferritin and some even in B12. Next time you get tested get these done too. Vit D is very important as it's linked to autoimmune diseases. Some people can be low in something and suffer all the symptoms, while others will have a few syptoms and others will have no symptoms. Regardless of symptoms, it's an important vitamin and you don't want to leave yourself open to a further illness down the track.

With very low Vit D, your doctor should test your calcium and magnesium which are required in sufficient quantities or the Vit D supplement will withdraw calcim from the bones and allow uptake of toxic minerals within the body.

Try some "isolated whey". It will help with muscle weakness. You can get it at any health food store. I agree with jenj770 it could be from neurological causes. I would go to another doctor for a second opinion or possibly a Naturopath or both! Best Wishes!

Yes. I had an electromylegram (spelling) and it came out fine...tho they did it on one side of my body..seems my right is worse but did not check that side. I hope the Vitamin D kicks in soon as it has been about two months now.